For the I-124 reconstruction project, Atkins used 3D HDS to provide the Tennessee Department of Transportation with faster, more efficient collection of as-built geometry at a higher level of accuracy than possible with conventional survey methods.
Atkins collected data for 5 miles of linear roadways including ramps, side streets, and intersections. In addition to a cost that is roughly 10 percent less than conventional methods, Atkins’ use of HDS required no traffic control or lane closures on this heavily traveled highway.
HDS also facilitated greater accuracy by enabling the capture of more data points than traditional methods, providing detailed data of the roadway, cross-slopes, intersections, and bridge as-built geometry. Crews collected data with an average of 3-inch spacing throughout the project.
HDS also promoted safe data collection for the crews and traveling public. Scans were gathered using Wi-Fi technology, enabling Atkins technicians to safely work at secure locations away from traffic.